Everyone has a TLS register.

Change-Id: Id7cdf67087aa7d5074c9c59b7e595bc391d9f146
diff --git a/linker/Android.mk b/linker/Android.mk
index 9718d90..5a18f6a 100644
--- a/linker/Android.mk
+++ b/linker/Android.mk
@@ -23,15 +23,9 @@
         -fvisibility=hidden \
         -Wall -Wextra -Werror
 
-# We need to access Bionic private headers in the linker...
+# We need to access Bionic private headers in the linker.
 LOCAL_CFLAGS += -I$(LOCAL_PATH)/../libc/
 
-# ...one of which is <private/bionic_tls.h>, for which we
-# need HAVE_ARM_TLS_REGISTER.
-ifeq ($(TARGET_ARCH)-$(ARCH_ARM_HAVE_TLS_REGISTER),arm-true)
-    LOCAL_CFLAGS += -DHAVE_ARM_TLS_REGISTER
-endif
-
 ifeq ($(TARGET_ARCH),arm)
     LOCAL_CFLAGS += -DANDROID_ARM_LINKER
 endif